Floor cleaning machine



FIG. 1 is a first perspective view of a floor cleaning machine showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a second perspective view showing the handle of the floor cleaning machine in an alternate position.

The broken line portions of the floor cleaning machine shown in the drawings form no part of the claimed design. 

CLAIM The ornamental design for a floor cleaning machine, as shown and described. 